The Clo-Cow Half Marathon is fun event for all of Northern California.

The Half Marathon traverses some rolling hills on the back-county roads. You are rewarded for your efforts with some beautiful hilly scenery, and many of our animal friends: sheep, horses, and of course our beloved moo-cows!

There is also a 10K & 5K for those who want to take part in the event but not quite a half marathon. Both events start and finish together in Historic Downtown Petaluma.